Two alternatively spliced forms of HAI-2 have been found in human tissues (1). HAI-2A, the full-length molecule and also known as placental bikunin, is a major form expressed in human tissues. Encoded by the SPINT2 gene, HAI-2A consists of two Kunitz domains, and a C-terminal transmembrane domain (1 - 5). Both Kunitz domains can function as inhibitors independent of each other. In addition to HGF activator and trysin, HAI-2A strongly inhibits plasmin, tissue and plasma kallikreins, and factor XIa. In comparison, HAI-2A is a weaker inhibitor of factor VIIa-tissue factor, factors IXa, Xa, and XIIa.
Key Product Details
Species Reactivity
Human
Applications
Western Blot, ELISA Detection (Matched Antibody Pair)
Label
Biotin
Antibody Source
Polyclonal Goat IgG
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Product Specifications
Immunogen
Mouse myeloma cell line NS0-derived recombinant human HAI-2A (R&D Systems, Catalog # 1106-PI)
Ala28-Lys197
Accession # O43291
Ala28-Lys197
Accession # O43291
Specificity
Detects human HAI-2 in ELISAs and Western blots. In sandwich immunoassays, less than 0.1% cross-reactivity with recombinant mouse HAI-2B and recombinant human HAI-1 is observed.
Clonality
Polyclonal
Host
Goat
Isotype
IgG
Applications for Human HAI‑2 Biotinylated Antibody
Application
Recommended Usage
Western Blot
0.1 µg/mL
Sample: Recombinant Human HAI‑2
Sample: Recombinant Human HAI‑2
Human HAI-2 Sandwich Immunoassay
Please Note: Optimal dilutions of this antibody should be experimentally determined.
Formulation, Preparation, and Storage
Purification
Antigen Affinity-purified
Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: HAI-2
References
- Kataoka, H. et al. (2002) Biochem. Biophys. Res. Comm. 290:1096.
- Kawaguchi, T. et al. (1997) J. Biol. Chem. 272:27558.
- Marlor. C.W. et al. (1997) J. Biol. Chem. 272:12202.
- Muller-Pillasch, F. et al. (1998) Biochim. Biophys. Acta 1395:88.
- Delaria, K.A. et al. (1997) J. Biol. Chem. 272:12209.
Long Name
HGF Activator Inhibitor Type 2
Alternate Names
HAI2
Gene Symbol
SPINT2
UniProt
Additional HAI-2 Products
Product Documents for Human HAI‑2 Biotinylated Antibody
Certificate of Analysis
To download a Certificate of Analysis, please enter a lot or batch number in the search box below.
Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human HAI‑2 Biotinylated Antibody
For research use only
Related Research Areas
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- R&D Systems Quality Control Western Blot Protocol
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
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